BHP+20 hp (5%)
Standard
400 hp
Tuned
420 hp
Torque+24 Nm (4%)
Standard
541 Nm
Tuned
565 Nm
Suitability
Limited (3/10)Gains Profile
Limited headroomHeadroom
LowJaguar S Type 4.2 V8 R 400hp ECU Remapping
Considering an ECU remap for your Jaguar S Type 4.2 V8 R 400hp? A Stage 1 remap can take this All petrol engine from 400 BHP to 420 BHP and from 541 Nm to 565 Nm of torque (naturally aspirated). This engine scores 3/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Jaguar S Type can achieve.
How this engine compares
- 3rdof 6 Jaguar S Type engines by power gain
- 14%of the 9,842 engines we hold gain data for see a smaller power increase
- 13%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Jaguar S Type 4.2 V8 R 400hp is a 4.2L naturally aspirated petrol engine producing 400 BHP and 541 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 420 BHP and 565 Nm — a gain of around 20 BHP (5%) and 24 Nm (4%).
This engine has low remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted). at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!High tuned torque: check transmission torque capacity and service history.